MX7839 Datasheet, PDF (1/14 Pages) Maxim Integrated Products – Octal, 13-Bit Voltage-Output DAC with Parallel Interface

19-2952; Rev 0; 7/03
Octal, 13-Bit Voltage-Output DAC
with Parallel Interface
General Description
The MX7839 contains eight 13-bit, voltage-output digital-
to-analog converters (DACs). On-chip precision output
amplifiers provide the voltage outputs. The device oper-
ates from ±15V supplies. Its bipolar output voltage swing
is ±10V and is achieved with no external components.
The MX7839 has three pairs of differential reference
inputs; two of these pairs are connected to two DACs
each, and a third pair is connected to four DACs. The
references are independently controlled, providing differ-
ent full-scale output voltages to the respective DACs.
The MX7839 features double-buffered interface logic
with a 13-bit parallel data bus. Each DAC has an input
latch and a DAC latch. Data in the DAC latch sets the
output voltage. The eight input latches are addressed
with three address lines. Data is loaded to the input
latch with a single write instruction. An asynchronous
load input (LDAC) transfers data from the input latch to
the DAC latch. The LDAC input controls all DACs;
therefore, all DACs can be updated simultaneously by
asserting LDAC.
An asynchronous CLR input sets the output of all eight
DACs to the respective DUTGND input of the op amp.
Note that CLR is a CMOS input, which is powered by
V_DD. All other logic inputs are TTL/CMOS compatible.
The MX7839 is pin-for-pin compatible with AD7839.
Features
o Full 13-Bit Performance without Adjustments
o Eight DACs in a Single Package
o Buffered Voltage Outputs
o Unipolar or Bipolar Voltage Swing to ±10V
o 31µs Output Settling Time
o Low Power Consumption: 8mA (typ)
o Small 44-Pin MQFP Package
o Double-Buffered Digital Inputs
o Asynchronous Load Updates All DACs
Simultaneously
o Asynchronous CLR Forces All DACs to
DUTGND_ _ Potential
Ordering Information
PART
MX7839AS
TEMP RANGE
-40°C to +85°C
PIN-PACKAGE
44 MQFP
INL
(LSB)
±2
Applications
Automatic Test Equipment (ATE)
Industrial Process Controls
Arbitrary Function Generators
Avionics Equipment
Minimum Component Count Analog Systems
Digital Offset/Gain Adjustment
SONET Applications
Functional Diagram appears at end of data sheet.
TOP VIEW
DUTGNDAB 1
OUTA 2
REFAB- 3
REFAB+ 4
V_DD 5
V_SS 6
LDAC 7
A2 8
A1 9
A0 10
CS 11
Pin Configuration
MX7839
33 DUTGNDGH
32 OUTH
31 REFGH-
30 REFGH+
29 V_SS
28 CLR
27 DB12
26 DB11
25 DB10
24 DB9
23 DB8
MQFP
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